Add methods to read/write matrix to base64

bradleybuda · Nov 1, 2011 · 5f7793b · 5f7793b
1 parent b7d925c
commit 5f7793b
Showing 1 changed file with 13 additions and 0 deletions.
diff --git a/params_matrix.rb b/params_matrix.rb
@@ -1,4 +1,5 @@
 require 'matrix'
+require 'stringio'
 
 class ParamsMatrix
   ROWS = 8
@@ -21,6 +22,18 @@ def self.write(io, matrix)
     end
   end
 
+  def self.to_base64(matrix)
+    io = StringIO.new
+    write(io, matrix)
+    [io.string].pack("m0")
+  end
+
+  def self.from_base64(str)
+    bytes = str.unpack("m0").first
+    io = StringIO.new(bytes)
+    read(io)
+  end
+
   def self.with_binary_io(io)
     io.binmode
     return yield